ul {
    padding: 0;
    list-style: none;
}

body {
    overflow-x: hidden;
}

h4 {
    margin: 0;
    padding: 0;
}

header {
    /* overflow: hidden; */
    position: relative;
    height: 65px;
    line-height: 65px;
}

.tel {
    padding-top: 21px;
    height: 65px;
}

.tel .row img {
    padding: 0;
    width: 22px;
    /* height: 22px; */
}

.pull-right {
    margin-top: 15px;
}

.nav {
    position: fixed;
    padding-top: 65px;
    top: 0;
    right: 0;
    z-index: 999;
    transform: translateX(101%);
    width: 50%;
    height: 100%;
    background-color: #fff;
    text-align: center;
    transition: all .3s;
    box-shadow: -2px 0 3px #ccc;
}

.nav span {
    position: absolute;
    top: 10px;
    right: 10px;
    font-size: 18px;
    color: #999;
    font-weight: 600;
    cursor: pointer;
}

.focus {
    position: relative;
    z-index: -1;
    width: 100%;
    height: 400px;
    background-color: rgb(250, 84, 18);
    color: #fff;
}

.focus .container {
    height: 100%;
    background: url(../imgs/14974_15765542173514.png) no-repeat right center;
}

.study .row {
    margin: 15px 0;
    width: 100%;
}

.study .row div {
    padding: 0;
    margin: 10px 0;
    height: 50px;
    line-height: 50px;
    text-align: center;
    font-size: 18px;
    border: 1px solid #444;
    border-radius: 15px;
    cursor: pointer;
}

.class {
    height: 256px;
}

.class .android {
    height: 256px;
    background-color: yellowgreen;
}

.class .wlw {
    background-color: violet;
    height: 128px;
}

.class .qrs {
    background-color: rgb(250, 32, 61);
    height: 128px;
}

.class .cpjl {
    background-color: sienna;
    height: 128px;
}

.class .ui {
    background-color: slateblue;
    height: 128px;
}

.class .web {
    background-color: rosybrown;
    height: 128px;
}

.class .ios {
    background-color: seagreen;
    height: 128px;
}

.news {
    width: 100%;
    padding: 40px 0;
    background-color: rgb(217, 234, 243);
}

.news_focus h4 {
    margin: 20px 0;
    font-weight: 600;
}

.bgc_img {
    overflow: hidden;
    width: 100%;
    height: 150px;
}

.bgc_img img {
    width: 100%;
    height: 100%;
    transition: all .3s;
}

.bgc_img:hover img {
    transform: scale(1.2);
}

.news .news_focus:last-child {
    margin: 0;
}

@media screen and (max-width: 970px) {
    header {
        position: sticky;
        top: 0;
        width: 100%;
        height: 65px;
        background-color: #fff;
        z-index: 999;
    }
    .class .android {
        height: 456px;
        background-color: yellowgreen;
    }
    .class .wlw {
        background-color: violet;
        height: 312px;
    }
    .class .qrs {
        background-color: rgb(250, 32, 61);
        height: 312px;
    }
    .class .cpjl {
        background-color: sienna;
        height: 312px;
    }
    .class .ui {
        background-color: slateblue;
        height: 312px;
    }
    .class .web {
        background-color: rosybrown;
        height: 312px;
    }
    .class .ios {
        background-color: seagreen;
        height: 312px;
    }
    .bgc_img {
        overflow: hidden;
        width: 100%;
        height: 300px;
    }
}